Re: how to show file encode under emacs

[Peter Dyballa]

Am 19.12.2007 um 04:27 schrieb chandle.wei:

> I'm use unicad.el that an elisp port of Mozilla Universal Charset Auto
> Detector .

I don't know that file. And I don't know what it can do better then  
existing code in GNU Emacs. Have you read in *info* buffer the  
"Recognize Coding" node? And some more on encoding issues? Or about  
the "Mode Line"?

> I just want show detectored encode like (utf-8 gb2312 shfit-jfs) under
> bottom bar .

What is that "bottom bar"? The dock?

> how to do it

Here is an excerpt form the HELLO buffer (C-h H):

Kannada (ಕನನಡ)                  ನಮಸಕಾರ
Lao (ພາສາລາວ)                   ສະບາຍດ,  
ຂໃຫໂຊກດ
Malayalam (മലയാളം)              നമസകാരം
Maltese (il-Malti)              Bonġu, Saħħa
Mathematics                     ∀ p ∈ world • hello p  □
-UUJ:%%--F1  HELLO          Top (1,0)      (Fundamental View)----Mi,  
19. Dez 2007 10:17 0.36----

The mode-line starts, at the left, with - and then, only when used in  
a terminal emulation or a real terminal, come three characters that  
describe encoding parameters (in a windowing environment only one  
character is used), I think it's Unicode (UTF-8) for input and output  
encoding operations and then the J stands for iso-2022-7bit encoding  
used for the file visiting the buffer. You can get explanation for  
these "remarks" with M-x describe-coding-system (or C-h C) and then  
RET to choose information for this buffer. In a windowing environment  
you can simply click with the mouse (left) onto the character and a  
*Help* buffer opens to explain – I think you'll need an up-to-date  
version 22.x of GNU Emacs.


If you're asking how to integrate output of unicad.el into mode-line:  
I don't know, because I don't know that file and what it does and how  
it outputs/provides information. Anyway, you can customise mode-line:

        Options menu -> Customize Emacs -> Specific Option...

and enter:

        m o d e - <TAB>

then choose mode-line-format. You'll see:

(#("-" 0 1
   (help-echo "mouse-1: select (drag to resize), mouse-2: delete  
others, mouse-3: delete this"))
 mode-line-mule-info mode-line-modified mode-line-frame- 
identification mode-line-buffer-identification

The important term is the variable mode-line-mule-info. You might  
consider to substitute it with something else, from unicad.el. You  
might also, and maybe better, consider to add something coming from  
unicad.el somewhere else to mode-line ...

--
Greetings

  Pete

Our enemies are innovative and resourceful, and so are we. They never  
stop thinking about new ways to harm our country and our people, and  
neither do we.
                                – Georges W. Bush